<?php

namespace Modules\MasterData\Http\Controllers;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Inertia\Inertia;
use Modules\MasterData\Models\Material;
use Modules\MasterData\Models\MaterialGroup;

class MaterialGroupController extends Controller
{
    public function index(Request $request)
    {
        $query = MaterialGroup::withCount('materials');

        if ($search = $request->search) {
            $query->where('name', 'like', "%{$search}%");
        }

        if ($status = $request->status) {
            $query->where('status', $status);
        }

        $groups = $query->latest()->paginate(15)->withQueryString();

        $allMaterials = Material::where('status', 'active')
            ->select('id', 'ulid', 'name', 'sku', 'unit', 'unit_cost', 'category')
            ->get();

        return Inertia::render('MaterialLogistics::Groups/Index', [
            'groups' => $groups,
            'allMaterials' => $allMaterials,
            'filters' => $request->only(['search', 'status']),
        ]);
    }

    public function show(MaterialGroup $materialGroup)
    {
        $materialGroup->load('materials:id,ulid,name,sku,unit,unit_cost,category');

        return response()->json($materialGroup);
    }

    public function store(Request $request)
    {
        $validated = $request->validate([
            'name' => 'required|string|max:255',
            'description' => 'nullable|string',
        ]);

        $group = MaterialGroup::create($validated);

        if ($request->has('material_ids') && is_array($request->material_ids)) {
            $materialIds = Material::whereIn('ulid', $request->material_ids)->pluck('id');
            $group->materials()->attach($materialIds);
        }

        return back()->with('success', "Material group \"{$group->name}\" created.");
    }

    public function update(Request $request, MaterialGroup $materialGroup)
    {
        $validated = $request->validate([
            'name' => 'required|string|max:255',
            'description' => 'nullable|string',
            'status' => 'nullable|in:active,archived',
        ]);

        $materialGroup->update($validated);

        return back()->with('success', 'Group updated.');
    }

    public function destroy(MaterialGroup $materialGroup)
    {
        if ($materialGroup->projects()->exists()) {
            return back()->with('error', 'Cannot delete a group that is assigned to projects. Remove it from all projects first.');
        }

        $name = $materialGroup->name;
        $materialGroup->delete();

        return back()->with('success', "Group \"{$name}\" deleted.");
    }

    public function addMaterial(Request $request, MaterialGroup $materialGroup)
    {
        $request->validate([
            'material_id' => 'required|string',
        ]);

        $material = Material::where('ulid', $request->material_id)->firstOrFail();

        if ($materialGroup->materials()->where('material_id', $material->id)->exists()) {
            return back()->with('error', 'Material is already in this group.');
        }

        $materialGroup->materials()->attach($material->id);

        return back()->with('success', "{$material->name} added to group.");
    }

    public function removeMaterial(MaterialGroup $materialGroup, Material $material)
    {
        $materialGroup->materials()->detach($material->id);

        return back()->with('success', "{$material->name} removed from group.");
    }
}